Power Systems Which of the following transformer is used in sub station for operating a protective relay? auto transformer distribution transformer All of these capacitor voltage transformer auto transformer distribution transformer All of these capacitor voltage transformer ANSWER DOWNLOAD EXAMIANS APP
Power Systems The specific speeds of Kaplan, Francis and Pelton turbines are in None of these neither increasing nor decreasing order. the increasing order. the decreasing order. None of these neither increasing nor decreasing order. the increasing order. the decreasing order. ANSWER DOWNLOAD EXAMIANS APP
Power Systems Differential relays does not used for which of the following faults? both 1 and 2 through faults faults within a generator faults within a transformer both 1 and 2 through faults faults within a generator faults within a transformer ANSWER DOWNLOAD EXAMIANS APP
Power Systems The conductor carries more current on surface as compared to core. This is called as corona effect skin effect unsymmetrical fault All of these corona effect skin effect unsymmetrical fault All of these ANSWER DOWNLOAD EXAMIANS APP
Power Systems A string insulator has 4 units. The voltage across bottom most unit is 10 kV and its efficiency is 90%. Find the total operating phase voltage? 45 kV 40 kV 32 kV 36 kV 45 kV 40 kV 32 kV 36 kV ANSWER DOWNLOAD EXAMIANS APP
Power Systems A transmission line has a surge impedance of 400 Ω is connected with the cable having surge impedance of 40 Ω, a surge magnitude of 100 kV is travelling from the transmission line towards the cable. Find the reflected voltage? 81.82 kV 18.18 kV -18.18 kV -81.82 kV 81.82 kV 18.18 kV -18.18 kV -81.82 kV ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS